/* ===================================================================
   CSS CUSTOM PROPERTIES
   =================================================================== */
:root {
  /* Colors */
  --color-primary:        #6C63FF;
  --color-primary-dark:   #5A52D5;
  --color-primary-light:  #8B84FF;
  --color-secondary:      #FF6584;
  --color-accent:         #43D9AD;

  /* Background & Surface */
  --color-bg:             #0F0F1A;
  --color-surface:        #1A1A2E;
  --color-surface-2:      #16213E;
  --color-border:         rgba(255, 255, 255, 0.08);
  --color-border-hover:   rgba(108, 99, 255, 0.4);

  /* Text */
  --color-text:           #E8E8F0;
  --color-text-muted:     #9898B0;
  --color-text-faint:     #5A5A7A;

  /* Typography */
  --font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
               'Microsoft YaHei', Roboto, Helvetica, Arial, sans-serif;

  /* Spacing (8px grid) */
  --sp-1:  0.5rem;    /*  8px */
  --sp-2:  1rem;      /* 16px */
  --sp-3:  1.5rem;    /* 24px */
  --sp-4:  2rem;      /* 32px */
  --sp-6:  3rem;      /* 48px */
  --sp-8:  4rem;      /* 64px */
  --sp-12: 6rem;      /* 96px */
  --sp-16: 8rem;      /* 128px */

  /* Layout */
  --container-max:     1200px;
  --container-pad:     1.25rem;

  /* Border radius */
  --radius-sm:   0.375rem;
  --radius-md:   0.75rem;
  --radius-lg:   1.25rem;
  --radius-xl:   2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md:   0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg:   0 8px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.25);

  /* Transitions */
  --t-fast:  150ms ease;
  --t-base:  250ms ease;
  --t-slow:  400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index */
  --z-base:    1;
  --z-overlay: 100;
  --z-header:  200;
}


/* ===================================================================
   CSS RESET + BASE
   =================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  overflow-x: hidden;
}

img, video, svg {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--t-base), opacity var(--t-base);
}

ul, ol { list-style: none; }

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
}


/* ===================================================================
   UTILITY CLASSES
   =================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--sp-12);
}

.section__header {
  text-align: center;
  margin-bottom: var(--sp-8);
}

.section__tag {
  display: inline-block;
  background: rgba(108, 99, 255, 0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(108, 99, 255, 0.3);
  padding: 0.3rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}

.section__tag--light {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-accent);
  border-color: rgba(67, 217, 173, 0.3);
}

.section__title {
  font-size: clamp(1.625rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--sp-2);
}

.section__subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 540px;
  margin-inline: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: transform var(--t-slow), box-shadow var(--t-slow),
              background-color var(--t-base), border-color var(--t-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(108, 99, 255, 0.45);
}

.btn--ghost {
  border: 2px solid var(--color-border);
  color: var(--color-text);
  background: transparent;
}
.btn--ghost:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
  transform: translateY(-2px);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.65s ease, transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grid children */
.reveal:nth-child(1) { transition-delay: 0ms; }
.reveal:nth-child(2) { transition-delay: 80ms; }
.reveal:nth-child(3) { transition-delay: 160ms; }
.reveal:nth-child(4) { transition-delay: 240ms; }
.reveal:nth-child(5) { transition-delay: 80ms; }
.reveal:nth-child(6) { transition-delay: 160ms; }
.reveal:nth-child(7) { transition-delay: 240ms; }
.reveal:nth-child(8) { transition-delay: 320ms; }


/* ===================================================================
   HEADER & NAVIGATION
   =================================================================== */
#header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(15, 15, 26, 0.8);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--t-base);
}
#header.scrolled {
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.nav__logo:hover { color: var(--color-primary-light); }

/* Hamburger button */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}
.nav__hamburger:hover { background: rgba(255, 255, 255, 0.05); }

.hamburger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--t-base), opacity var(--t-base), width var(--t-base);
  transform-origin: center;
}

.nav__hamburger.open .hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger.open .hamburger__bar:nth-child(2) {
  opacity: 0;
  width: 0;
}
.nav__hamburger.open .hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Nav links — mobile drawer */
.nav__links {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(75vw, 300px);
  height: 100dvh;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  padding: calc(64px + var(--sp-4)) var(--sp-3) var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  z-index: var(--z-overlay);
  transition: right var(--t-slow);
  overflow-y: auto;
}
.nav__links.open { right: 0; }

.nav__link {
  padding: 0.625rem var(--sp-2);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: background var(--t-base), color var(--t-base);
}
.nav__link:hover,
.nav__link.active {
  background: rgba(108, 99, 255, 0.1);
  color: var(--color-primary-light);
}

.nav__link--cta {
  margin-top: var(--sp-2);
  background: var(--color-primary);
  color: #fff !important;
  text-align: center;
}
.nav__link--cta:hover {
  background: var(--color-primary-dark) !important;
}

/* Overlay behind mobile nav */
.nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: calc(var(--z-overlay) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-slow);
}
.nav__overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

/* Focus ring */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Tablet+ nav */
@media (min-width: 768px) {
  .nav__hamburger { display: none; }
  .nav__links {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    border: none;
    padding: 0;
    flex-direction: row;
    align-items: center;
    gap: 0.25rem;
    overflow-y: visible;
  }
  .nav__link--cta {
    margin-top: 0;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
  }
}


/* ===================================================================
   HERO
   =================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: var(--sp-16) var(--sp-12);
}

/* Radial gradient background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 15% 50%, rgba(108, 99, 255, 0.14) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 85% 20%, rgba(255, 101, 132, 0.09) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 60% 85%, rgba(67, 217, 173, 0.07) 0%, transparent 60%);
  pointer-events: none;
}

/* Decorative blobs */
.hero__bg-shapes { position: absolute; inset: 0; pointer-events: none; }
.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.12;
  animation: float 9s ease-in-out infinite;
}
.shape--1 {
  width: 500px; height: 500px;
  background: var(--color-primary);
  top: -100px; left: -150px;
  animation-delay: 0s;
}
.shape--2 {
  width: 350px; height: 350px;
  background: var(--color-secondary);
  bottom: -80px; right: -80px;
  animation-delay: -3s;
}
.shape--3 {
  width: 280px; height: 280px;
  background: var(--color-accent);
  top: 40%; left: 55%;
  animation-delay: -6s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-28px) scale(1.04); }
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  max-width: 720px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(108, 99, 255, 0.12);
  border: 1px solid rgba(108, 99, 255, 0.25);
  color: var(--color-primary-light);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  width: fit-content;
}

.hero__title {
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.025em;
  color: var(--color-text);
}

.hero__title--accent {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.1875rem);
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-top: var(--sp-1);
}

@media (min-width: 1200px) {
  .hero__inner { max-width: 760px; }
}


/* ===================================================================
   PLATFORMS
   =================================================================== */
.platforms__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
}

@media (min-width: 640px) {
  .platforms__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1200px) {
  .platforms__grid { grid-template-columns: repeat(4, 1fr); }
}

.platform-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  transition: transform var(--t-slow), box-shadow var(--t-slow), border-color var(--t-slow);
}
.platform-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-border-hover);
}

.platform-card__icon { font-size: 2.5rem; line-height: 1; }
.platform-card__title { font-size: 1.125rem; font-weight: 700; }
.platform-card__desc { font-size: 0.875rem; color: var(--color-text-muted); flex: 1; }

.platform-card__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.platform-card__features li::before {
  content: '✦ ';
  color: var(--color-accent);
  font-size: 0.625rem;
  vertical-align: middle;
}

.platform-card__footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: auto;
  padding-top: var(--sp-2);
  border-top: 1px solid var(--color-border);
}


/* ===================================================================
   TECH STACK
   =================================================================== */
.stack {
  background: var(--color-surface-2);
}

.stack__categories {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

@media (min-width: 768px) {
  .stack__categories { grid-template-columns: repeat(2, 1fr); }
}

.stack__category {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
}

.stack__category-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--sp-3);
  color: var(--color-text);
}

.stack__items { display: flex; flex-direction: column; gap: var(--sp-2); }

.stack__item {
  display: grid;
  grid-template-columns: 1.75rem 1fr 2.5rem;
  grid-template-rows: auto auto;
  column-gap: 0.625rem;
  row-gap: 0.25rem;
  align-items: center;
}

.stack__icon {
  font-size: 1.125rem;
  line-height: 1;
  grid-row: 1;
  grid-column: 1;
}
.stack__name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  grid-row: 1;
  grid-column: 2;
}
.stack__level {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: right;
  grid-row: 1;
  grid-column: 3;
}
.stack__bar-track {
  grid-row: 2;
  grid-column: 1 / -1;
  height: 5px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.stack__bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
  transition: width 1.1s cubic-bezier(0.4, 0, 0.2, 1);
}


/* ===================================================================
   LIFECYCLE
   =================================================================== */
.lifecycle__steps {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  padding-left: 1.25rem;
}

/* Vertical connector line */
.lifecycle__steps::before {
  content: '';
  position: absolute;
  left: calc(2.25rem - 1px);
  top: 2rem;
  bottom: 2rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
  border-radius: 2px;
}

.lifecycle__step {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: var(--sp-3);
  align-items: start;
}

.lifecycle__step-icon {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 50%;
  background: var(--color-surface-2);
  border: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  transition: border-color var(--t-base), box-shadow var(--t-base);
}
.lifecycle__step:hover .lifecycle__step-icon {
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(67, 217, 173, 0.3);
}

/* Step counter bubble */
.lifecycle__step-icon::before {
  content: attr(data-step);
  position: absolute;
  top: -6px;
  right: -6px;
  width: 22px;
  height: 22px;
  background: var(--color-primary);
  border-radius: 50%;
  font-size: 0.625rem;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Use parent's data-step on the icon */
.lifecycle__step[data-step="01"] .lifecycle__step-icon::before { content: "01"; }
.lifecycle__step[data-step="02"] .lifecycle__step-icon::before { content: "02"; }
.lifecycle__step[data-step="03"] .lifecycle__step-icon::before { content: "03"; }
.lifecycle__step[data-step="04"] .lifecycle__step-icon::before { content: "04"; }
.lifecycle__step[data-step="05"] .lifecycle__step-icon::before { content: "05"; }
.lifecycle__step[data-step="06"] .lifecycle__step-icon::before { content: "06"; }

.lifecycle__step-content {
  padding-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.lifecycle__step-content h3 {
  font-size: 1.125rem;
  font-weight: 700;
}
.lifecycle__step-content p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.lifecycle__step-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: 0.25rem;
}
.lifecycle__step-tags span {
  padding: 0.2rem 0.6rem;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-primary-light);
  letter-spacing: 0.02em;
}

/* Desktop: zigzag / alternating layout */
@media (min-width: 1024px) {
  .lifecycle__steps {
    padding-left: 0;
  }
  .lifecycle__steps::before {
    left: calc(50% - 1px);
    top: 0;
    bottom: 0;
  }
  .lifecycle__step {
    grid-template-columns: 1fr 4.5rem 1fr;
    gap: var(--sp-4);
  }
  .lifecycle__step:nth-child(odd) .lifecycle__step-content {
    grid-column: 1;
    grid-row: 1;
    text-align: right;
    align-items: flex-end;
  }
  .lifecycle__step:nth-child(odd) .lifecycle__step-icon {
    grid-column: 2;
    grid-row: 1;
  }
  .lifecycle__step:nth-child(odd)::after {
    content: '';
    grid-column: 3;
  }
  .lifecycle__step:nth-child(even) .lifecycle__step-icon {
    grid-column: 2;
    grid-row: 1;
  }
  .lifecycle__step:nth-child(even) .lifecycle__step-content {
    grid-column: 3;
    grid-row: 1;
  }
  .lifecycle__step:nth-child(even)::before {
    content: '';
    grid-column: 1;
  }

  .lifecycle__step-tags {
    justify-content: flex-start;
  }
  .lifecycle__step:nth-child(odd) .lifecycle__step-tags {
    justify-content: flex-end;
  }
}


/* ===================================================================
   SKILLS
   =================================================================== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-3);
}

@media (min-width: 640px) {
  .skills__grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1200px) {
  .skills__grid { grid-template-columns: repeat(4, 1fr); }
}

.skill-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4) var(--sp-3);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  transition: transform var(--t-slow), border-color var(--t-slow), box-shadow var(--t-slow);
}
.skill-card:hover {
  transform: translateY(-5px);
  border-color: rgba(67, 217, 173, 0.4);
  box-shadow: 0 0 30px rgba(67, 217, 173, 0.1);
}

.skill-card__icon { font-size: 2rem; line-height: 1; }
.skill-card__title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text);
}
.skill-card p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}


/* ===================================================================
   STATS
   =================================================================== */
.stats-section {
  background: var(--color-surface-2);
  padding-block: var(--sp-12);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-4);
  margin-top: var(--sp-2);
}

@media (min-width: 640px) {
  .stats__grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1200px) {
  .stats__grid { grid-template-columns: repeat(6, 1fr); }
}

.stat-card {
  text-align: center;
  padding: var(--sp-4) var(--sp-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.02);
  transition: border-color var(--t-base), transform var(--t-slow);
}
.stat-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
}

.stat-card__number {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 0.375rem;
}

.stat-card__label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

.stat-card__sub {
  font-size: 0.75rem;
  color: var(--color-text-faint);
  margin-top: 0.25rem;
}


/* ===================================================================
   FOOTER
   =================================================================== */
.footer {
  background: var(--color-surface);
  padding-top: var(--sp-8);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

@media (min-width: 768px) {
  .footer__inner { grid-template-columns: 1.4fr 2fr; }
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.footer__brand p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer__logo { font-size: 1.1875rem; font-weight: 800; }

.footer__social {
  display: flex;
  gap: var(--sp-2);
  margin-top: var(--sp-1);
}
.footer__social a {
  font-size: 1.25rem;
  line-height: 1;
  opacity: 0.6;
  transition: opacity var(--t-base), transform var(--t-base);
}
.footer__social a:hover { opacity: 1; transform: translateY(-2px); }

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
}

.footer__col h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--sp-2);
  letter-spacing: 0.02em;
}
.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer__col li a {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.footer__col li a:hover { color: var(--color-primary-light); }

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--sp-3) var(--container-pad);
  margin-top: var(--sp-6);
  text-align: center;
  color: var(--color-text-faint);
  font-size: 0.8125rem;
}
.footer__bottom a {
  color: inherit;
  text-decoration: none;
}
.footer__bottom a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}


/* ===================================================================
   RESPONSIVE TWEAKS
   =================================================================== */

/* On very small screens, collapse footer link columns */
@media (max-width: 480px) {
  .footer__links {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer__links .footer__col:last-child {
    grid-column: 1 / -1;
  }
}

/* Ensure hero meta items wrap cleanly on mobile */
@media (max-width: 480px) {
  .hero__meta { gap: var(--sp-2); }
  .hero__meta span { font-size: 0.8125rem; }
}